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CN-224232812-U - Battery pack unlocking mechanism of electric wheelchair

CN224232812UCN 224232812 UCN224232812 UCN 224232812UCN-224232812-U

Abstract

The utility model provides an unlocking mechanism of an electric wheelchair battery pack, which belongs to the technical field of storage batteries and comprises a battery shell body, a handle shell body, a lock pin, a pressing part and a locking mechanism, wherein the handle shell body is arranged at the upper part of the battery shell body, the top surface of the handle shell body is provided with a first opening for the pressing part to move vertically, two side surfaces of the handle shell body are respectively provided with a second opening for the lock pin to move horizontally, and when the pressing part is pressed, the lock pin contracts towards the inside of the handle shell body. The utility model adopts a double-lock pin structure, can improve self-locking safety, ensures that the battery is not loosened under working conditions such as vibration or impact, and is quick to disassemble and assemble and convenient to disassemble and charge by one-key unlocking.

Inventors

  • ZHUANG CHUNHUI
  • WANG ZHENGYU
  • TANG SHUAI
  • XIN LEI
  • GUO JIAXING
  • HUANG JINMING

Assignees

  • 上海龙创汽车设计股份有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (10)

  1. 1. The battery pack unlocking mechanism of the electric wheelchair comprises a battery shell body (17) and a handle shell body (13), wherein the handle shell body (13) is arranged on the upper portion of the battery shell body (17), and is characterized by further comprising a lock pin (3) and a pressing portion (8), a first opening (18) for the pressing portion (8) to vertically move is formed in the top surface of the handle shell body (13), a second opening (19) for the lock pin (3) to horizontally move is formed in the side surfaces of two sides of the handle shell body (13) respectively, and when the pressing portion (8) is pressed, the lock pin (3) contracts towards the inside of the handle shell body (13).
  2. 2. The electric wheelchair battery pack unlocking mechanism is characterized in that the battery shell (17) is fixedly connected with the handle shell (13) through the handle base (1), an upward-raised buckling groove (20) is formed in the middle of the handle base (1), two guide grooves (2) are respectively formed in two sides of the buckling groove (20), a first guide column (6) is horizontally arranged on the inner wall of the guide groove (2), a blind hole (4) is formed in the lock pin (3), and the first guide column (6) is inserted into the blind hole (4).
  3. 3. The electric wheelchair battery pack unlocking mechanism according to claim 2, wherein the first guide post (6) is provided with a spring (5), the diameter of the spring (5) is larger than that of the blind hole (4), two ends of the spring (5) respectively prop against the lock pin (3) and the inner wall of the guide groove (2), and the lock pin (3) can press the spring (5) to horizontally move along the first guide post (6).
  4. 4. The electric wheelchair battery pack unlocking mechanism is characterized in that a handle support (9) is further arranged between the handle shell (13) and the handle base (1), the pressing portion (8) is arranged on the top surface of the handle support (9), through holes (7) are formed in two sides of the pressing portion (8), a second guide post (10) is vertically arranged on the top surface of the buckling groove (20), the second guide post (10) penetrates through the through holes (7), the top end of the second guide post (10) is connected with the handle shell (13) to limit the moving range of the handle support (9) between the handle shell (13) and the handle base (1), and the handle support (9) can slide along the second guide post (10) when the pressing portion (8) is pressed.
  5. 5. The unlocking mechanism for the battery pack of the electric wheelchair is characterized in that the lock pin (3) is provided with a limiting lug (11), the handle support (9) is provided with a guiding inclined surface (12) which gradually inclines downwards from inside to outside, and the guiding inclined surface (12) is abutted against the limiting lug (11) so as to drive the lock pin (3) to horizontally move along the first guide column (6) when the handle support (9) slides along the second guide column (10).
  6. 6. An unlocking mechanism for a battery pack of an electric wheelchair according to claim 5, wherein the end of the guide slope (12) is extended inward with a limit stop (14) so that when the spring (5) is overstretched, the lower end surface of the limit projection (11) abuts against the limit stop (14) to restrict the lock pin (3) from being separated from the first guide post (6).
  7. 7. The battery pack unlocking mechanism for the electric wheelchair is characterized in that the upper wall of the guide groove (2) is provided with a guide lug (15), and the lock pin (3) is provided with a lock groove (16) which is in sliding fit with the guide lug (15).
  8. 8. The battery pack unlocking mechanism for an electric wheelchair according to claim 7, wherein the angle between the guide inclined surface (12) and the first guide post (6) is 20-70 degrees.
  9. 9. The battery pack unlocking mechanism for the electric wheelchair is characterized in that an included angle between the guide inclined surface (12) and the first guide post (6) is 45 degrees.
  10. 10. The battery pack unlocking mechanism for the electric wheelchair is characterized in that a plurality of clamping grooves are formed in the lower portion of the battery outer shell (17).

Description

Battery pack unlocking mechanism of electric wheelchair Technical Field The utility model relates to the technical field of storage batteries, in particular to a battery pack unlocking mechanism of an electric wheelchair. Background The battery assembly mode of the existing electric wheelchair is generally divided into a fixed mode and a replaceable mode, wherein the replaceable battery is generally assembled on the electric wheelchair frame in a movable installation mode, and the whole wheelchair is not required to be charged. In the prior art, although the flexibility of the electric wheelchair is improved by the unlocking mechanism with the detachable battery, the electric wheelchair has the defects that for a user needing wheelchair to take the place of walking, the requirement on partial mechanical locking strength is high, the unlocking can be realized only by needing a large force, meanwhile, some designs need to press a button and a sliding battery at the same time, the steps are complicated, the operation is more difficult for the old and the weak hands, and the time is possibly delayed in emergency. Therefore, how to install and disassemble quickly and conveniently is an important point of the research and development personnel in the prior art. Disclosure of utility model In view of the above-mentioned shortcomings of the prior art, an object of the present utility model is to provide a solution to at least one technical problem set forth in the background art. The technical scheme includes that the unlocking mechanism for the battery pack of the electric wheelchair comprises a battery shell body, a handle shell body, a lock pin and a pressing part, wherein the handle shell body is arranged at the upper part of the battery shell body, a first opening for the pressing part to move vertically is formed in the top surface of the handle shell body, a second opening for the lock pin to move horizontally is formed in the side surfaces of two sides of the handle shell body respectively, and when the pressing part is pressed, the lock pin contracts towards the inside of the handle shell body. Further, the battery shell is fixedly connected with the handle shell through a handle base, an upward-raised buckling groove is formed in the middle of the handle base, two sides of the buckling groove are respectively provided with a guide groove, the inner wall of the guide groove is horizontally provided with a first guide column, the lock pin is provided with a blind hole, and the first guide column is inserted into the blind hole. Further, the first guide post is provided with a spring, the diameter of the spring is larger than that of the blind hole, two ends of the spring respectively prop against the lock pin and the inner wall of the guide groove, and the lock pin can squeeze the spring to horizontally move along the first guide post. The handle comprises a handle shell, a handle base, a pressing part, a buckling groove, a second guide column, a handle support, a second guide column and a handle support, wherein the handle support is further arranged between the handle shell and the handle base, the pressing part is arranged on the top surface of the handle support, through holes are formed in two sides of the pressing part, the second guide column penetrates through the through holes vertically, the top end of the second guide column is connected with the handle shell to limit the moving range of the handle support between the handle shell and the handle base, and the handle support can slide along the second guide column when the pressing part is pressed. Furthermore, the lock pin is provided with a limit lug, the handle bracket is provided with a guide inclined plane which gradually inclines downwards from inside to outside, and the guide inclined plane is propped against the limit lug, so that the lock pin is driven to horizontally move along the first guide post when the handle bracket slides along the second guide post. Further, a limit stop is extended inward from the end of the guide inclined surface, so that when the spring is excessively stretched, the lower end surface of the limit projection abuts against the limit stop, and the lock pin is limited to be separated from the first guide post. Further, the upper wall of the guide groove is provided with a guide lug, and the lock pin is provided with a lock groove in sliding fit with the guide lug. Further, the included angle between the guide inclined plane and the first guide post is 20-70 degrees. Preferably, the included angle between the guide inclined plane and the first guide post is 45 degrees. Further, a plurality of clamping grooves are formed in the lower portion of the battery outer shell. The utility model has the advantages that the battery is fixed by adopting the double lock pins, and higher safety and anti-falling performance are provided under the double locking mechanism, even if one lock pin fails due to vibration or impact, the